-port 27015 ; Changes your port # for the game.-console ; When launching Half-Life, this will take you straight to the console.-dev ; This is for developer mode.-zone # ; This allocates more memory to scripting files, like autoexec.cfg and so forth.-game [mod's name] ; Enable Half-Life to play modification games other than to go through the menu to select them.-safe ; It start the game in safe mode disable audio etc.-autoconfig ; Restores video and performance settings to default for the current hardware detected.-condebug ; Logs all console output into the console.log text file.-nocrashdialog ; Suppresses some 'memory could not be read' unhandled errors.-novid ; When loading a game with this parameter, the intro Valve video will not play.-toconsole ; Starts the engine directly in the console, unless a map is specified with +map.+a +r_mmx 1 ; Instead of using a cfg you can launch the game with a command or a cvar in the command line.+ex_interp 0.01 ; Sets ex_interp value